I have a suspicion that this device is a similar thing to the device that is used for sleep apnea (or snoring curing) - which essentially rearranges the relationship of the upper and lower jaws, and changes the breathing path. Helps some (not all) people with sleep apnea. I also wonder if it really cures, or is "just" a very effective sensory device. The sleep apnea devices do need to be individually fitted - I suspect these examples do too.
Then again, if it looks too good to be true....? And for example one might suspect that each of the examples (BEB, tourettes ) just might be secondary, i.e. caused by something specific, like the blepharospasm person's car crash, as against true BEB. Wonder if it works for the no cause known crew among us?
Curious and interesting though
Cheers
peter